Question

For the cell $Zn\left(s\right)|Z{n}^{2+}\left(aq\right)||C{u}^{+2}\left(aq\right)|Cu\left(s\right)$. The cell potential $E_{cell}$ can be increased.

• A. By increasing $\left[C{u}^{+2}\right]$
• B. By increasing $\left[Z{n}^{+2}\right]$
• C. By decreasing $\left[C{u}^{+2}\right]$
• D. By decreasing $\left[Z{n}^{+2}\right]$

Answer 1

The correct option is A By increasing $\left[C{u}^{+2}\right]$

Solution

$E_{cell}=E_{cell}^0-\frac{2.303RT}{nF}log\frac{\left[Z{n}^{2+}\right]}{\left[C{u}^{2+}\right]}$

By increasing conc. of Cu , cell potential will increase.

The correct answer is A